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D.W. Williams and P.B. Burrus

1 Assistant Professor. 2 Research Specialist. We gratefully acknowledge partial funding of this project by the United States Golf Association and the Kentucky Turfgrass Council. Discussions of herbicides and plant growth regulators imply no

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Kevin M. Folta and Kayla Shea Childers

morphology, development, and productivity from seed to senescence. Some plant systems are quite amenable to light-driven manipulation. Strawberry is an excellent system to demonstrate how light may be used as a growth regulator in various capacities

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Alicain S. Carlson, John M. Dole and Brian E. Whipker

hybrids) ( Whipker et al., 2011a ). Substrate drenches of flurprimidol and paclobutrazol did not affect flower height of amaryllis ( Hippeastrum ) and paclobutrazol and uniconazole reduced leaf length ( Miller et al., 2013 ). Plant growth regulators may

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Christopher J. Currey and John E. Erwin

Andersen, A.S. Andersen, L. 2000 Growth regulation as a necessary prerequisite for introduction of new plants Acta Hort. 541 183 192 Adriansen, E. 1989 Growth and flowering in pot plants soaked with plant growth regulator solutions in ebb and flood benches

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Nan Tang, Xiuting Ju, Yafan Hu, Rulong Jia and Daocheng Tang

growth regulators have important roles in plant growth and development, such as promoting flowering, prolonging vase life, inhibiting abscission, preventing/breaking bud dormancy, controlling growth, and overcoming bud deterioration ( Cleland, 2010

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Maria A. Macias-Leon and Daniel I. Leskovar

concentration was reduced to 20 μ m . ACC treatments did not show any significant response in the range 10–30 μ m ; therefore, the concentration tested was 250 μ m . Seeds were primed and evaluated as described for study 1. Table 2. Plant growth regulator

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Anish Malladi and Jacqueline K. Burns

and to design practices to improve plant performance. Studies examining the nature of long-distance communication have shown that the common phytohormones, referred to within this article as plant growth regulators (PGRs), participate in such

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Diana R. Cochran and Amy Fulcher

phytotoxicity ( Meijón et al., 2009 ) and be perceived as digressing from sustainable production ( Lütken et al., 2012 ). Plant growth regulators have several modes of action, including branch inducing, chemical pinching (chemicals that suppress apical dominance

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Bärbel Röck-Okuyucu, Meltem Bayraktar, Ismail Hakki Akgun and Aynur Gurel

.71 µ m IAA) ( G ); Kn + NAA combinations (2.32 µ m Kn + 2.69 µ m NAA, 2.32 µ m Kn + 5.37 µ m NAA) ( H ). Scale bar = 1 cm. PGR = plant growth regulator; WPM = woody plant medium; BA = 6-benzyladenine; TDZ = thidiazuron; IAA = indoleacetic acid; NAA

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Jaume Lordan, Terence L. Robinson, Mario Miranda Sazo, Win Cowgill, Brent L. Black, Leslie Huffman, Kristy Grigg-McGuffin, Poliana Francescatto and Steve McArtney

branching ( Basak et al., 1992 ). MaxCel ® , a cytokinin plant growth regulator that is already labeled for several uses on apples, was registered for chemical branching of nursery apple trees in the United States in 2013. Most of the published branching